causal
Analysis v1
Strong Opposition
Lifting heavy weights builds fast-moving muscle fibers for power, and lifting lighter weights builds slow-moving muscle fibers for endurance, letting you train muscles for different goals.
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39
Evidence from Studies
Supporting (0)
0
Community contributions welcome
No supporting evidence found
Contradicting (1)
39
Community contributions welcome
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Comparing High-Load and Low-Load Endurance Training for Strength and Hypertrophy: A Systematic Review and Meta-Analysis
Systematic Review With Meta-Analysis
The study talks about how heavy or light weight training affects muscle size and strength, but the claim is about how it affects different types of muscle fibers. Since the study doesn't look at muscle fibers, it can't tell us if the claim is right or wrong.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.